Method for manufacturing knotted carpets.



F. BOYER.

METHOD FOR MANUFACTURING KNOTTED CARPETS.

APPLICATION FILED AUG-5. I9I5.

1,180,008., Patented Apr. 18, 1916.

4 SHEETS-SHEET I.

4 SHEETS-:SHEET 2.

Patented Apr. 18, 1916.

F. BOYER.

[Ill-Ill "I71! APPLICATION FILED AUG-5.1915.

METHOD FOR MANUFACTURING K NOTTED CARPETS.

F. BUYER.

METHOD FOR MANUFACTURING KNOTTED CARPETS.

APPLICATION FILED AUG.5, I915.

Patented Apr. 18, 1916.

4 SHEETS-@HEET 3 F. BOYER.

METHOD FOR MANUFACTURING KNOTTED CARPETS.

APPLICATION FILED AUG.5,1 915.

1,18%003. Patented Apr. 18, 1916.

' 4 SHEETSSHEET 4- FERNAND BUYER, or PARIS, :rnancn.

METHOD FOR MANUFACTURING KNOT'IED GARPETS.

Specification of Letters Patent. Patented; Apr, 18, 1916,

original application filed September 30,1914, Serial No. 864,221. Divided and this application filed August 5, 1915. Serial No. 43,775.

To aZZ'wlwm-z't may concern:

Be it known that I, FERNANi) 'BOYER, manufacturer, a citizen of the Republic of France, residing at Paris, in the Republic of France, have invented certain new and useful Improvements in Methods for Manufacturing Knotted Carpets, of which the following is a specification.

This invention relates to a method for manufacturing knotted carpets and this application is a division of my co-pending application, Serial No. 864,221, filed September 30, 1914, for amachine for manufacturing knotted carpets.

As is known knotted carpets are made with pile threads slung around and tightened upon some of the warp threads of a tissue. According to the kind of knots employed these carpets are called either Smyrna or Persian carpets. These two knots do not differ much from each other, but the Smyrna knot is the more solid one. Such pile threads knotted into 'a tissue after the one or the other kind will project with their ends on one side of the'tissueforming a velvet-like covering.

So far as I am aware all efforts hitherto made in producing such carpets by machinery have been unsuccessful, because the 7 methods employed required very expensive,

complicated and slowly working machinery ivlgich could not compete with skilful hand a or. 1

In a certain method the pile threads are first prepared separately being cut. to size in a hand-operated apparatus and are then fed to the machine for knotting. This process limits the output and requiresmuch attendance. In another method the tools em-- 'ployed are so:v clumsy'that they areto be used only in "coarse work. In fine work it was necessary-to go over each series of pile knots several times, shifting the machinery spools as there are pairs of warps. The.

tissue of the carpet is formed during or-" f fitted to a bar 120? advancing and retreateach time, thereby reducing the output to such an extent as tomake it impossible to compete withhand labor.

. According to the present invention the knots are made-in single rows even in fine work simultaneously on the whole width of the carpet and the pile threads are fed from a rack of spools containing as many rather between '.the introduction of the clamping the free ends,

all for the Smyrna knot.

presenting the pile threads without cutting thempreviously at the proper length and-one fora pair of warpsin front of these by means of. thread guides, then then stretching each thread in front of a pair ofwarps'at an angle over thread rests, then engaging the threads by means of open tools located behind and reaching across the warp, then cutting the threads, then drawingboth ends of each thread across the warps and around the same, then crossing the ends behind the warps, then forming a knot by drawing the crossed ends with open tools located in front of the warps across the same, the frictional contact with the same preventing the ends of the pile thread from slipping outof said open tools, then tightening the knotand pressing the newly formed knot against the finished portion of the carpet andthen weaving in a Weft thread. 2

In the accompanying, drawings the method has been illustrated for the Smyrna and for the Persian knot.

Figures 1 'and'2 and 4 to 8 are side eleva tions, representing different stages of the method, Figs. 3 and 16'are front views and Figs. 9 to-l5 and Fig. 17

As shown in Fig. 1 the ends of the pile threads p projecting downwardly from suitable thread guides 62 are clamped fast by clamp bars 96, 97 and presented in front of the warps 138, one pile thread for a, pair of warps. The thread guides moving then upward close above the thread-rests 125 fixed on bars 109 which have advanced in the meantime between the pilethreads as is represented in Fig. 2 will then move horizon-- tally sidewise stretching the pile threads at .an angle over the thread rests as shown in Fig. 3. While the threads arethus being stretched horizontally over the said rests plans of the same 125 open hooks v.16 guided within guides 15 will advance from behind and across the wa'rp's and will with one hook between every two-pairs of warps engage the pile threads whereupon the thread guides 62 will move vertically upward and assume the position represented in Fig. 3. Then the knives 120 ing again will thereby cut the pile threads as shown in Fig. 2, while the clamps 96, 97 will let 'go the clamped ends. The open hooks 16 now retiring will draw the ends of I ends from slipping out of the hooks.

the pile threads across the warps and when i the warp are so placed that when advancing each enters the space between the two warpthreads that have been wound around by one-pile thread. Hooks 50 now move out of their guides 49 at first only so far that their points enter between the warp threads in order to prevent their spreading. Holding-pins 126 now move up from the position shown in Fig. 4 to that in Fig. 5, whereupon'the hooks 15, 16 are moved so far horizontally sidewise in the direction of the arrow'in Fig, 10 that the clutched ends of the pins 126 are caused to lie entirely within the" pile thread are pulled laterallyon one side of the two surrounded warp threads. Then hooks 50 are further'adva'nced to the position of Fig. 5 and reach a position entirely on one side of the two pile thread ends as shown in Fig. 10. Hooks 15, 16 will now descend a little, so that the endsof the pile thread which are not held by the holding hooks 50. Hooks 16 moving now horizontally in the opposite direction to the position' shown in Fig. 11 the ends of the pile threads which were not held by the holding "make the illustration clearer.

pins are made to press laterally against the hooks '50. Hooks 15, 16 descend a little farther and still more laterally from the position in Fig. 11 to that of Fig. 12 whereby the ends of the thread notheld by the holding pin are made to press against the underside of hook 50 .(Fig. 6). In this Fig. 6 however the end of the next following thread on this'side has been omitted to In this position the holding pins 126 are withdrawn again. Hooks 15, 16 now move farther sidewise and at the same time upwardly into the position shown in Fig. 13 whereby the ends of the thread which had been held by the holding pins slide into the hooks 50 while.

to their proper places. r

now a little farther (Fig. 7) and the'hooks I 15, 16- will at the same time move a trifle downwardly and the crossedfends caused to lie completely down into the hook 50. In this moment hooks 15, 16 will release the ends of the threads and the hooks 50 draw these ends downwardly through the warp and between the two warp threads along the other side of the warp where the two ends of each pile thread p will be held and clamped fast by the hook 50 which has now been drawn into its guide 49. By this op eration the knotting of a Smyrna knothas been accomplished (Fig. 15).

' By a suitable instrument such as a descending reed 143, shown in Fig. 8, the knots are now pressed down against the finished part of the carpet while at the same time hooks 50 are pulling on the thread ends. Thereby knots are made tight and brought In Fig. 8, p represents a tied knot and p a knot'being tied. After that the knots have been made a thread of weftis introduced to form the tissue of the carpet whereupon the whole process described may begin anew.

In 1 6 is shown front view and in Fig. 17in a horizontal cross section alpiece of a carpet manufactured by this process I just described.

Having thus fully described and asceri' tained the nature of my invention and iii-- what manner it is to lie performed, I v declare that what I claim is:

A method for manufacturing knotted carpets consisting in placing an uncut pile thread in front of a pair of warps, then stretching the pile thread in front of its pair of warps, then cutting the pile thread and drawing the ends thereof across the warps and'around the same, then crossing the ends of the pile thread behind the warps, then forming a knot by drawing .the crossed ends of the pile thread back between its pair of warps, then tightening the lmot and pressing the thus formed knot against the finished portion of the carpet, and then weaving ina weft thread.

vIn testimony whereof I have afiixed my signature in presence of a witness.

FERNAND BOYER. Witness:

CHAS. P. PRESSLY. 

